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src/share/jaxws_classes/com/sun/tools/internal/xjc/reader/xmlschema/bindinfo/ForkingFilter.java@373ffda63c9a (annotated)

src/share/jaxws_classes/com/sun/tools/internal/xjc/reader/xmlschema/bindinfo/ForkingFilter.java

Wed, 27 Apr 2016 01:27:09 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:27:09 +0800

changeset 0

373ffda63c9a

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/jaxws/
changeset: 657:d47a47f961ee
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	package com.sun.tools.internal.xjc.reader.xmlschema.bindinfo;
aoqi@0	27
aoqi@0	28	import com.sun.xml.internal.bind.v2.WellKnownNamespace;
aoqi@0	29	import java.util.ArrayList;
aoqi@0	30
aoqi@0	31	import org.xml.sax.Attributes;
aoqi@0	32	import org.xml.sax.ContentHandler;
aoqi@0	33	import org.xml.sax.Locator;
aoqi@0	34	import org.xml.sax.SAXException;
aoqi@0	35	import org.xml.sax.XMLFilter;
aoqi@0	36	import org.xml.sax.helpers.XMLFilterImpl;
aoqi@0	37
aoqi@0	38	/**
aoqi@0	39	* {@link XMLFilter} that can fork an event to another {@link ContentHandler}
aoqi@0	40	* in the middle.
aoqi@0	41	*
aoqi@0	42	* <p>
aoqi@0	43	* The side handler receives SAX events before the next handler in the filter chain does.
aoqi@0	44	*
aoqi@0	45	* @author Kohsuke Kawaguchi
aoqi@0	46	*/
aoqi@0	47	public class ForkingFilter extends XMLFilterImpl {
aoqi@0	48
aoqi@0	49	/**
aoqi@0	50	* Non-null if we are also forking events to this handler.
aoqi@0	51	*/
aoqi@0	52	private ContentHandler side;
aoqi@0	53
aoqi@0	54	/**
aoqi@0	55	* The depth of the current element that the {@link #side} handler
aoqi@0	56	* is seeing.
aoqi@0	57	*/
aoqi@0	58	private int depth;
aoqi@0	59
aoqi@0	60	/**
aoqi@0	61	* In-scope namespace mapping.
aoqi@0	62	* namespaces[2n ] := prefix
aoqi@0	63	* namespaces[2n+1] := namespace URI
aoqi@0	64	*/
aoqi@0	65	private final ArrayList<String> namespaces = new ArrayList<String>();
aoqi@0	66
aoqi@0	67	private Locator loc;
aoqi@0	68
aoqi@0	69	public ForkingFilter() {
aoqi@0	70	}
aoqi@0	71
aoqi@0	72	public ForkingFilter(ContentHandler next) {
aoqi@0	73	setContentHandler(next);
aoqi@0	74	}
aoqi@0	75
aoqi@0	76	public ContentHandler getSideHandler() {
aoqi@0	77	return side;
aoqi@0	78	}
aoqi@0	79
aoqi@0	80	@Override
aoqi@0	81	public void setDocumentLocator(Locator locator) {
aoqi@0	82	super.setDocumentLocator(locator);
aoqi@0	83	this.loc = locator;
aoqi@0	84	}
aoqi@0	85
aoqi@0	86	public Locator getDocumentLocator() {
aoqi@0	87	return loc;
aoqi@0	88	}
aoqi@0	89
aoqi@0	90	@Override
aoqi@0	91	public void startDocument() throws SAXException {
aoqi@0	92	reset();
aoqi@0	93	super.startDocument();
aoqi@0	94	}
aoqi@0	95
aoqi@0	96	private void reset() {
aoqi@0	97	namespaces.clear();
aoqi@0	98	side = null;
aoqi@0	99	depth = 0;
aoqi@0	100	}
aoqi@0	101
aoqi@0	102	@Override
aoqi@0	103	public void endDocument() throws SAXException {
aoqi@0	104	loc = null;
aoqi@0	105	reset();
aoqi@0	106	super.endDocument();
aoqi@0	107	}
aoqi@0	108
aoqi@0	109	@Override
aoqi@0	110	public void startPrefixMapping(String prefix, String uri) throws SAXException {
aoqi@0	111	if (WellKnownNamespace.XML_NAMESPACE_URI.equals(uri)) return; //xml prefix shall not be declared based on jdk api javadoc
aoqi@0	112	if(side!=null)
aoqi@0	113	side.startPrefixMapping(prefix,uri);
aoqi@0	114	namespaces.add(prefix);
aoqi@0	115	namespaces.add(uri);
aoqi@0	116	super.startPrefixMapping(prefix,uri);
aoqi@0	117	}
aoqi@0	118
aoqi@0	119	@Override
aoqi@0	120	public void endPrefixMapping(String prefix) throws SAXException {
aoqi@0	121	if ("xml".equals(prefix)) return; //xml prefix shall not be declared based on jdk api javadoc
aoqi@0	122	if(side!=null)
aoqi@0	123	side.endPrefixMapping(prefix);
aoqi@0	124	super.endPrefixMapping(prefix);
aoqi@0	125	namespaces.remove(namespaces.size()-1);
aoqi@0	126	namespaces.remove(namespaces.size()-1);
aoqi@0	127	}
aoqi@0	128
aoqi@0	129	@Override
aoqi@0	130	public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
aoqi@0	131	if(side!=null) {
aoqi@0	132	side.startElement(uri,localName,qName,atts);
aoqi@0	133	depth++;
aoqi@0	134	}
aoqi@0	135	super.startElement(uri, localName, qName, atts);
aoqi@0	136	}
aoqi@0	137
aoqi@0	138	/**
aoqi@0	139	* Starts the event forking.
aoqi@0	140	*/
aoqi@0	141	public void startForking(String uri, String localName, String qName, Attributes atts, ContentHandler side) throws SAXException {
aoqi@0	142	if(this.side!=null) throw new IllegalStateException(); // can't fork to two handlers
aoqi@0	143
aoqi@0	144	this.side = side;
aoqi@0	145	depth = 1;
aoqi@0	146	side.setDocumentLocator(loc);
aoqi@0	147	side.startDocument();
aoqi@0	148	for( int i=0; i<namespaces.size(); i+=2 )
aoqi@0	149	side.startPrefixMapping(namespaces.get(i),namespaces.get(i+1));
aoqi@0	150	side.startElement(uri,localName,qName,atts);
aoqi@0	151	}
aoqi@0	152
aoqi@0	153	@Override
aoqi@0	154	public void endElement(String uri, String localName, String qName) throws SAXException {
aoqi@0	155	if(side!=null) {
aoqi@0	156	side.endElement(uri,localName,qName);
aoqi@0	157	depth--;
aoqi@0	158	if(depth==0) {
aoqi@0	159	for( int i=namespaces.size()-2; i>=0; i-=2 )
aoqi@0	160	side.endPrefixMapping(namespaces.get(i));
aoqi@0	161	side.endDocument();
aoqi@0	162	side = null;
aoqi@0	163	}
aoqi@0	164	}
aoqi@0	165	super.endElement(uri, localName, qName);
aoqi@0	166	}
aoqi@0	167
aoqi@0	168	@Override
aoqi@0	169	public void characters(char ch[], int start, int length) throws SAXException {
aoqi@0	170	if(side!=null)
aoqi@0	171	side.characters(ch, start, length);
aoqi@0	172	super.characters(ch, start, length);
aoqi@0	173	}
aoqi@0	174
aoqi@0	175	@Override
aoqi@0	176	public void ignorableWhitespace(char ch[], int start, int length) throws SAXException {
aoqi@0	177	if(side!=null)
aoqi@0	178	side.ignorableWhitespace(ch, start, length);
aoqi@0	179	super.ignorableWhitespace(ch, start, length);
aoqi@0	180	}
aoqi@0	181	}